In a YouTube video posted by user Quang Tran online, an illuminated object is seen hovering over houses in Fort Mill, south of Charlotte, for nearly a minute before vanishing behind some roofs.
Tran then saw a second object pop up in another part of the sky. He recorded both the UFOs (Unidentified Flying objects) on his phone camera on the evening of January 30.
The second video shows a strange object moving left and then right, while an easily recognisable passenger plane audibly zooms by, 'New York Daily News' reported.
Users in the comment section of the two videos debated over the objects' identities, with some suggesting that if not something extra-terrestrial, they could have been drones or remote-controlled toys.
Since 1939, 11 UFOs have been reported in Fort Mill, according to the US National UFO Reporting Center, the paper reported.